{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360011146492307328.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1126/science.1154339"}},{"identifier":{"@type":"URI","@value":"https://www.science.org/doi/pdf/10.1126/science.1154339"}}],"dc:title":[{"@value":"Synchronizing Rock Clocks of Earth History"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>\n                    Calibration of the geological time scale is achieved by independent radioisotopic and astronomical dating, but these techniques yield discrepancies of ∼1.0% or more, limiting our ability to reconstruct Earth history. To overcome this fundamental setback, we compared astronomical and\n                    <jats:sup>40</jats:sup>\n                    Ar/\n                    <jats:sup>39</jats:sup>\n                    Ar ages of tephras in marine deposits in Morocco to calibrate the age of Fish Canyon sanidine, the most widely used standard in\n                    <jats:sup>40</jats:sup>\n                    Ar/\n                    <jats:sup>39</jats:sup>\n                    Ar geochronology. This calibration results in a more precise older age of 28.201 ± 0.046 million years ago (Ma) and reduces the\n                    <jats:sup>40</jats:sup>\n                    Ar/\n                    <jats:sup>39</jats:sup>\n                    Ar method's absolute uncertainty from ∼2.5 to 0.25%. In addition, this calibration provides tight constraints for the astronomical tuning of pre-Neogene successions, resulting in a mutually consistent age of ∼65.95 Ma for the Cretaceous/Tertiary boundary.\n                  </jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380004236852625285","@type":"Researcher","foaf:name":[{"@value":"K. F. Kuiper"}],"jpcoar:affiliationName":[{"@value":"Faculty of Geosciences, Department of Earth Sciences, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, Netherlands."},{"@value":"Faculty of Earth and Life Sciences, Institute of Earth Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, Netherlands."},{"@value":"Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, USA."},{"@value":"Department of Earth and Planetary Science, University of California, Berkeley, CA 94720, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1380011146492307332","@type":"Researcher","foaf:name":[{"@value":"A. Deino"}],"jpcoar:affiliationName":[{"@value":"Faculty of Geosciences, Department of Earth Sciences, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, Netherlands."},{"@value":"Faculty of Earth and Life Sciences, Institute of Earth Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, Netherlands."},{"@value":"Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, USA."},{"@value":"Department of Earth and Planetary Science, University of California, Berkeley, CA 94720, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1380011146492307330","@type":"Researcher","foaf:name":[{"@value":"F. J. Hilgen"}],"jpcoar:affiliationName":[{"@value":"Faculty of Geosciences, Department of Earth Sciences, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, Netherlands."},{"@value":"Faculty of Earth and Life Sciences, Institute of Earth Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, Netherlands."},{"@value":"Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, USA."},{"@value":"Department of Earth and Planetary Science, University of California, Berkeley, CA 94720, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1380011146492307328","@type":"Researcher","foaf:name":[{"@value":"W. Krijgsman"}],"jpcoar:affiliationName":[{"@value":"Faculty of Geosciences, Department of Earth Sciences, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, Netherlands."},{"@value":"Faculty of Earth and Life Sciences, Institute of Earth Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, Netherlands."},{"@value":"Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, USA."},{"@value":"Department of Earth and Planetary Science, University of California, Berkeley, CA 94720, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1380011146492307329","@type":"Researcher","foaf:name":[{"@value":"P. R. Renne"}],"jpcoar:affiliationName":[{"@value":"Faculty of Geosciences, Department of Earth Sciences, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, Netherlands."},{"@value":"Faculty of Earth and Life Sciences, Institute of Earth Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, Netherlands."},{"@value":"Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, USA."},{"@value":"Department of Earth and Planetary Science, University of California, Berkeley, CA 94720, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1380011146492307331","@type":"Researcher","foaf:name":[{"@value":"J. R. Wijbrans"}],"jpcoar:affiliationName":[{"@value":"Faculty of Geosciences, Department of Earth Sciences, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, Netherlands."},{"@value":"Faculty of Earth and Life Sciences, Institute of Earth Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, Netherlands."},{"@value":"Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, USA."},{"@value":"Department of Earth and Planetary Science, University of California, Berkeley, CA 94720, USA."}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00368075"},{"@type":"EISSN","@value":"10959203"}],"prism:publicationName":[{"@value":"Science"}],"dc:publisher":[{"@value":"American Association for the Advancement of Science (AAAS)"}],"prism:publicationDate":"2008-04-25","prism:volume":"320","prism:number":"5875","prism:startingPage":"500","prism:endingPage":"504"},"reviewed":"false","url":[{"@id":"https://www.science.org/doi/pdf/10.1126/science.1154339"}],"createdAt":"2008-04-24","modifiedAt":"2024-01-10","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050856995322584448","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Age control of the first appearance datum for Javanese Homo erectus in the Sangiran area"},{"@value":"Age control of the first appearance datum for Javanese\n            <i>Homo erectus</i>\n            in the Sangiran area"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004233284619648","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Depth dependency of the Paleocene‐Eocene carbon isotope excursion: Paired benthic 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Melting Before the Emplacement of the Afar Mantle Plume Head Inferred From <sup>40</sup>Ar/<sup>39</sup>Ar Dating"}]},{"@id":"https://cir.nii.ac.jp/crid/1360588381066814080","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Earth orbital rhythms links timing of Deccan trap volcanism phases and global climate change"}]},{"@id":"https://cir.nii.ac.jp/crid/1360846640846268288","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"10Be evidence for delayed acquisition of remanent magnetization in marine sediments: Implication for a new age for the Matuyama–Brunhes boundary"}]},{"@id":"https://cir.nii.ac.jp/crid/1360846640846531456","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Towards a robust and consistent middle Eocene astronomical 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magnetic field—detailed magneto-climatostratigraphy and geomagnetic influence on climateル"},{"@language":"ja","@value":"地磁気の逆転—高精度磁気・気候層序と地磁気の気候への影響"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206497114496","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"A reassessment of the Matuyama-Brunhes boundary age"},{"@language":"ja","@value":"Brunhes-Matuyama境界年代値の再検討"},{"@language":"ja-Kana","@value":"Brunhes-Matuyama キョウカイ ネンダイチ ノ サイケントウ"}]},{"@id":"https://cir.nii.ac.jp/crid/2051714792015345024","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Matuyama-Brunhes geomagnetic reversal record and associated key tephra layers in Boso Peninsula : extraction of primary magnetization of geomagnetic fields from mixed magnetic minerals of depositional, diagenesis, and weathering 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